Results 41 to 50 of about 537,557 (300)

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

ISOTROPY ANALYSIS OF METAMATERIALS

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2015
Metamaterials – artificial periodic structures with subwavelength feature sizes – can be characterized with macroscopic electromagnetic properties, like refractive index and wave impedance, just like homogeneous materials.
Arnold Kalvach, Zsolt Szabó
doaj   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

The impact of broadband in schools: summary report [PDF]

, 2005
Summary of the report, which reviews evidence for the impact of broadband in English schools, exploring; variations in provision in level of broadband connectivity. Links between the level of broadband activity and nationally accessible performance data;
Ault, Alison, Banyard, Phil, Bird, Karen, Dillon, Gayle, Hayes, Mary, Selwood, Ian, Somekh, Bridget, Twining, Peter, Underwood, Jean   +8 more
core  

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Context-Based e2e Autonomous Operation in B5G Networks

Sensors
The research and innovation related to fifth-generation (5G) networks that has been carried out in recent years has decided on the fundamentals of the smart slice in radio access networks (RANs), as well as the autonomous fixed network operation.
Shaoxuan Wang, Marc Ruiz, Luis Velasco
doaj   +1 more source

A Broad-Band Wide-Angle Linear-to-Circular Polarization Converter Based on Stripline Metasurface

IEEE Access, 2021
This paper proposes a broad-band linear-to-circular polarization converter based on a multi-layer stripline metasurface. The structure is constructed of three stripline metallic layers stacked with two dielectric plates, and it has different ...
Zuning Yang, Tiesheng Wu, Shunlan Zhang, Zhihui Liu, Dan Yang, Weiping Cao   +5 more
doaj   +1 more source

The impact of broadband in schools [PDF]

, 2005
The report reviews evidence for the impact of broadband in English schools, exploring; Variations in provision in level of broadband connectivity; Links between the level of broadband activity and nationally accessible performance data; Aspects of ...
Banyard, P, Bird, K, Dillon, G, Hayes, M, Selwood, I, Somekh, B, Twiner, A, Twining, P, Underwood, J   +8 more
core  

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Improving Quality of Data: IoT Data Aggregation Using Device to Device Communications

IEEE Access, 2018
With the widespread adaptation of the Internet of things (IoT), we are already witnessing a deluge of IoT data analytics applications. IoT data analytics can be defined as a process to control and optimize decision making in real time, by analyzing huge ...
Sunny Sanyal, Puning Zhang
doaj   +1 more source